from random import randint
alist = list() #[]
list('hello') #['h','e','l','l','0']
list((10,20,30))#[10,20,30] 元组转列表
astr = str() #''
str(10) #'10'
str(['h', 'e', 'l', 'l', 'o'])  # 将列表转成字符串
atuple = tuple() #()
tuple('hello')#('h','e','l','l','o')
num_list = [randint(1,100) for i in range(10)]
max(num_list)
min(num_list)
print(max(num_list))
print(min(num_list))